asp.net html控件的File控件实现多文件上传实例分享

  asp.net多文件上传使用html控件的File控件,在form中就需要加入【 enctype="multipart/form-data"】。

  up3.aspx文件代码

  

复制代码 代码如下:

  <%@ Page Language="C#" AutoEventWireup="true" CodeFile="up3.aspx.cs" Inherits="up3" %>

  <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

  <html xmlns="http://www.w3.org/1999/xhtml">

  <head runat="server">

  <title></title>

  <script language="javascript" type="text/javascript">

  function addFile() {

  var odiv = document.getElementById("MyFile");

  var str = "<div><input name='File' type='file' /></div>";

  odiv.insertAdjacentHTML("beforeEnd", str);

  }

  function resetFile() {

  var odiv = document.getElementById("MyFile");

  odiv.innerHTML = "<div><input name='File' type='file' /></div>";

  }

  </script>

  </head>

  <body>

  <form id="form1" runat="server" enctype="multipart/form-data">

  <input type="button" value="增加" onclick="addFile()" />

  <input type="button" value="重置" onclick="resetFile()" />

  <div id="MyFile">

  <div><input name="File" type="file" /></div>

  </div>

  <asp:Button runat="server" Text="上传" ID="Button1" OnClick="Button1_Click" BorderColor="Desktop"

  BorderWidth="1px" Height="20px" Width="60px"></asp:Button>

  <div>

  <asp:Label ID="Label1" runat="server"></asp:Label>

  </div>

  </form>

  </body>

  </html>

  up3.aspx.cs文件代码

  

复制代码 代码如下:

  using System;

  using System.Collections.Generic;

  using System.Linq;

  using System.Web;

  using System.Web.UI;

  using System.Web.UI.WebControls;

  using System.IO;

  public partial class up3 : System.Web.UI.Page

  {

  protected void Page_Load(object sender, EventArgs e)

  {

  }

  protected void Button1_Click(object sender, EventArgs e)

  {

  string upPath = "/up/"; //上传文件路径

  int upLength = 5; //上传文件大小

  string upFileExtName = "|bmp|jpg|jpeg|png|gif|";

  HttpFileCollection _files = System.Web.HttpContext.Current.Request.Files;

  int flag = _files.Count;

  int flagN = 0;

  int flagE = 0;

  int flagEE = 0;

  string flagEEstr = "";

  for (int i = 0; i < _files.Count; i++)

  {

  string name = _files[i].FileName;

  FileInfo fi = new FileInfo(name);

  string oldfilename = fi.Name;

  string scExtension = fi.Extension.ToLower();

  string fileName = DateTime.Now.ToString("yyyyMMddhhmmssfff") + fi.Extension; // 文件名称,当前时间(yyyyMMddhhmmssfff)

  string webFilePath = Server.MapPath(upPath) + fileName; // 服务器端文件路径

  if (upFileExtName.IndexOf(scExtension.Replace(".", "")) == -1)

  {

  flagEE = flagEE + 1;

  flagEEstr = flagEEstr + "第" + (i + 1) + "个文件,文件名[" + oldfilename + "],文件类型不符合!";

  continue;

  }

  if ((fi.Length / (1024 * 1024)) > upLength)

  {

  flagEE = flagEE + 1;

  flagEEstr = flagEEstr + "第" + (i + 1) + "个文件,文件名[" + oldfilename + "],超出" + upLength + "M大小限制!";

  continue;

  }

  try

  {

  _files[i].SaveAs(webFilePath);

  }

  catch (Exception ex)

  {

  flagEE = flagEE + 1;

  flagEEstr = flagEEstr + "第" + (i + 1) + "个文件,上传异常【"+ex.Message+"】";

  }

  }

  Label1.Text = "总文件【" + flag + "】,上传成功文件【" + flagN + "】,异常文件【" + (flagE + flagEE) + "】【" + flagEEstr + "】";

  }

  }